A catalyst family of high-entropy alloy atomic layers with square atomic arrangements comprising iron- and platinum-group metals-Reference-Cited by-同舟云学术

A catalyst family of high-entropy alloy atomic layers with square atomic arrangements comprising iron- and platinum-group metals

Published:2024-07-26 Issue:30 Volume:10 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Wu Cheng-Yu¹^ORCID,Hsiao Yueh-Chun¹^ORCID,Chen Yi¹,Lin Kun-Han¹^ORCID,Lee Tsung-Ju²,Chi Chong-Chi³^ORCID,Lin Jui-Tai¹^ORCID,Hsu Liang-Ching⁴^ORCID,Tsai Hsin-Jung²,Gao Jia-Qi¹,Chang Chun-Wei¹,Kao I-Ting¹^ORCID,Wu Chia-Ying¹^ORCID,Lu Ying-Rui⁴^ORCID,Pao Chih-Wen⁴^ORCID,Hung Sung-Fu²⁵,Lu Ming-Yen³^ORCID,Zhou Shan⁶^ORCID,Yang Tung-Han¹⁷^ORCID

Affiliation:

1. Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.

2. Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.

3. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.

4. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.

5. Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 300093, Taiwan.

6. Department of Nanoscience and Biomedical Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.

7. High Entropy Materials Center, National Tsing Hua University, Hsinchu 30013, Taiwan.

Abstract

We report a catalyst family of high-entropy alloy (HEA) atomic layers having three elements from iron-group metals (IGMs) and two elements from platinum-group metals (PGMs). Ten distinct quinary compositions of IGM-PGM-HEA with precisely controlled square atomic arrangements are used to explore their impact on hydrogen evolution reaction (HER) and hydrogen oxidation reaction (HOR). The PtRuFeCoNi atomic layers perform enhanced catalytic activity and durability toward HER and HOR when benchmarked against the other IGM-PGM-HEA and commercial Pt/C catalysts. Operando synchrotron x-ray absorption spectroscopy and density functional theory simulations confirm the cocktail effect arising from the multielement composition. This effect optimizes hydrogen-adsorption free energy and contributes to the remarkable catalytic activity observed in PtRuFeCoNi. In situ electron microscopy captures the phase transformation of metastable PtRuFeCoNi during the annealing process. They transform from random atomic mixing (25°C), to ordered L1 0 (300°C) and L1 2 (400°C) intermetallic, and finally phase-separated states (500°C).

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adl3693

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